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Twisted Text (Easy)

Time of First Successful Submission: 2025-08-24 08:34:42

Twisted Text (Hard)

Time of First Successful Submission: 2025-08-24 08:39:09

Tidy Task (Easy)

Time of First Successful Submission: 2025-08-24 08:40:29

Tidy Task (Hard)

Time of First Successful Submission: 2025-08-24 08:41:11

Logical License (Easy)

Time of First Successful Submission: 2025-08-24 08:43:15

Logical License (Hard)

Time of First Successful Submission: 2025-08-24 08:44:11

Modest Mangler (Easy)

Time of First Successful Submission: 2025-08-24 09:17:18

Triple Dereference

Time of First Successful Submission: 2025-08-26 09:12:14


Intro to Programming Languages

15 / 234 3225 / 31932


Commands

Time of First Successful Submission: 2025-08-24 07:45:31

Command Arguments

Time of First Successful Submission: 2025-08-24 07:45:55

Command History

Time of First Successful Submission: 2025-08-24 07:46:17

The Root Path

Time of First Successful Submission: 2025-08-24 07:47:46

Absolute Paths

Time of First Successful Submission: 2025-08-24 07:48:14

Changing position

Time of First Successful Submission: 2025-08-24 07:48:59

Changing to an Absolute Path

Time of First Successful Submission: 2025-08-24 07:49:37

Relative Paths

Time of First Successful Submission: 2025-08-24 07:50:47

Cat

Time of First Successful Submission: 2025-08-25 09:55:31

Ls

Time of First Successful Submission: 2025-08-25 09:58:18

Ls All

Time of First Successful Submission: 2025-08-25 10:00:11

Find

Time of First Successful Submission: 2025-08-25 10:07:10

Piping Echo

Time of First Successful Submission: 2025-08-25 10:54:30

Piping Stdout

Time of First Successful Submission: 2025-08-25 10:55:36

Piping Stdin

Time of First Successful Submission: 2025-08-25 10:58:12


Intro to Cybersecurity

179 / 183 224 / 20008


Path Traversal 1

Time of First Successful Submission: 2025-09-01 12:56:11

Path Traversal 2

Time of First Successful Submission: 2025-09-03 23:01:57

CMDi 1

Time of First Successful Submission: 2025-09-01 23:13:10

CMDi 2

Time of First Successful Submission: 2025-09-01 23:17:17

CMDi 3

Time of First Successful Submission: 2025-09-01 23:16:21

CMDi 4

Time of First Successful Submission: 2025-09-01 23:22:53

CMDi 5

Time of First Successful Submission: 2025-09-01 23:27:24

CMDi 6

Time of First Successful Submission: 2025-09-01 23:44:23

Authentication Bypass 1

Time of First Successful Submission: 2025-09-02 22:42:51

Authentication Bypass 2

Time of First Successful Submission: 2025-09-02 22:44:28

SQLi 1

Time of First Successful Submission: 2025-09-02 22:47:29

SQLi 2

Time of First Successful Submission: 2025-09-02 22:51:21

SQLi 3

Time of First Successful Submission: 2025-09-02 22:55:01

SQLi 4

Time of First Successful Submission: 2025-09-02 22:57:51

SQLi 5

Time of First Successful Submission: 2025-09-03 23:09:16

XSS 1

Time of First Successful Submission: 2025-09-03 22:18:01

XSS 2

Time of First Successful Submission: 2025-09-03 22:19:43

XSS 3

Time of First Successful Submission: 2025-09-03 22:21:27

XSS 4

Time of First Successful Submission: 2025-09-03 22:24:43

XSS 5

Time of First Successful Submission: 2025-09-03 22:45:53

XSS 6

Time of First Successful Submission: 2025-09-03 22:47:35

XSS 7

Time of First Successful Submission: 2025-09-03 22:56:59

CSRF 1

Time of First Successful Submission: 2025-09-03 23:27:21

CSRF 2

Time of First Successful Submission: 2025-09-03 23:31:16

CSRF 3

Time of First Successful Submission: 2025-09-03 23:52:53

CSRF 4

Time of First Successful Submission: 2025-09-03 23:56:52

CSRF 5

Time of First Successful Submission: 2025-09-04 00:09:23

Connect

Time of First Successful Submission: 2025-09-01 14:26:53

Send

Time of First Successful Submission: 2025-09-01 14:27:39

Shutdown

Time of First Successful Submission: 2025-09-01 15:45:36

Listen

Time of First Successful Submission: 2025-09-01 15:46:34

Scan 1

Time of First Successful Submission: 2025-09-01 16:51:47

Scan 2

Time of First Successful Submission: 2025-09-06 22:56:13

Monitor 1

Time of First Successful Submission: 2025-09-06 22:59:17

Monitor 2

Time of First Successful Submission: 2025-09-06 23:01:01

Sniffing Cookies

Time of First Successful Submission: 2025-09-20 11:35:52

Network Configuration

Time of First Successful Submission: 2025-09-08 12:42:22

Firewall 1

Time of First Successful Submission: 2025-09-08 12:45:55

Firewall 2

Time of First Successful Submission: 2025-09-08 12:46:46

Firewall 3

Time of First Successful Submission: 2025-09-08 12:48:42

Denial of Service 1

Time of First Successful Submission: 2025-09-08 12:49:20

Denial of Service 2

Time of First Successful Submission: 2025-09-20 08:45:06

Denial of Service 3

Time of First Successful Submission: 2025-09-25 07:29:15

Ethernet

Time of First Successful Submission: 2025-09-08 13:31:53

IP

Time of First Successful Submission: 2025-09-08 13:30:47

TCP

Time of First Successful Submission: 2025-09-08 13:33:14

TCP Handshake

Time of First Successful Submission: 2025-09-08 13:33:56

UDP

Time of First Successful Submission: 2025-09-08 14:01:57

UDP 2

Time of First Successful Submission: 2025-09-08 14:03:41

UDP Spoofing 1

Time of First Successful Submission: 2025-09-08 14:06:51

UDP Spoofing 2

Time of First Successful Submission: 2025-09-20 09:06:00

UDP Spoofing 3

Time of First Successful Submission: 2025-09-20 09:41:44

UDP Spoofing 4

Time of First Successful Submission: 2025-09-20 10:40:48

ARP

Time of First Successful Submission: 2025-09-08 14:14:35

Intercept

Time of First Successful Submission: 2025-09-20 11:20:35

XOR

Time of First Successful Submission: 2025-09-02 08:42:29

XORing Hex

Time of First Successful Submission: 2025-09-02 08:48:25

XORing ASCII

Time of First Successful Submission: 2025-09-02 08:51:01

XORing ASCII Strings

Time of First Successful Submission: 2025-09-02 08:56:29

One-time Pad

Time of First Successful Submission: 2025-09-02 08:58:30

One-time Pad Tampering

Time of First Successful Submission: 2025-09-02 09:04:33

Many-time Pad

Time of First Successful Submission: 2025-09-02 09:05:53

AES

Time of First Successful Submission: 2025-09-02 09:06:44

AES-ECB-CPA

Time of First Successful Submission: 2025-09-21 07:21:02

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2025-09-21 07:38:15

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2025-09-21 07:41:48

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2025-09-21 07:45:32

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2025-09-26 13:25:48

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2025-09-26 16:51:29

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2025-09-26 17:05:43

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2025-09-26 17:58:42

AES-CBC

Time of First Successful Submission: 2025-09-21 10:10:11

AES-CBC Tampering

Time of First Successful Submission: 2025-09-21 10:18:57

AES-CBC Resizing

Time of First Successful Submission: 2025-09-21 10:35:29

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2025-09-27 17:16:48

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2025-09-27 17:28:19

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2025-09-27 18:34:27

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2025-09-27 21:21:12

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2025-09-27 21:40:41

DHKE

Time of First Successful Submission: 2025-09-08 13:04:55

DHKE-to-AES

Time of First Successful Submission: 2025-09-21 08:12:28

RSA 1

Time of First Successful Submission: 2025-09-21 08:28:44

RSA 2

Time of First Successful Submission: 2025-09-21 08:40:36

RSA 3

Time of First Successful Submission: 2025-09-21 08:50:35

RSA 4

Time of First Successful Submission: 2025-09-21 09:04:11

RSA Signatures

Time of First Successful Submission: 2025-09-27 21:59:53

SHA 1

Time of First Successful Submission: 2025-09-04 00:14:00

SHA 2

Time of First Successful Submission: 2025-09-21 06:34:07

TLS 1

Time of First Successful Submission: 2025-09-25 11:13:30

TLS 2

Time of First Successful Submission: 2025-09-25 11:47:07

level1

Time of First Successful Submission: 2025-09-02 23:17:32

level2

Time of First Successful Submission: 2025-09-02 23:17:57

level3

Time of First Successful Submission: 2025-09-02 23:18:52

level4

Time of First Successful Submission: 2025-09-02 23:19:17

level5

Time of First Successful Submission: 2025-09-02 23:20:04

level6

Time of First Successful Submission: 2025-09-02 23:22:18

level7

Time of First Successful Submission: 2025-09-02 23:23:09

level8

Time of First Successful Submission: 2025-09-02 23:24:20

level9

Time of First Successful Submission: 2025-09-02 23:25:05

level10

Time of First Successful Submission: 2025-09-02 23:26:27

level11

Time of First Successful Submission: 2025-09-02 23:29:42

level12

Time of First Successful Submission: 2025-09-02 23:31:47

level13

Time of First Successful Submission: 2025-09-02 23:32:20

level14

Time of First Successful Submission: 2025-09-02 23:35:16

level15

Time of First Successful Submission: 2025-09-02 23:35:43

level16

Time of First Successful Submission: 2025-09-02 23:39:48

level17

Time of First Successful Submission: 2025-09-03 11:51:36

level18

Time of First Successful Submission: 2025-09-03 11:59:31

level19

Time of First Successful Submission: 2025-09-03 12:05:53

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2025-08-24 08:01:34

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2025-08-24 08:02:48

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2025-08-24 08:05:03

Reading Endianness (Python)

Time of First Successful Submission: 2025-09-01 21:35:23

Reading Endianness (C)

Time of First Successful Submission: 2025-09-01 21:36:45

Reading Endianness (x86)

Time of First Successful Submission: 2025-09-01 21:39:07

Version Information (Python)

Time of First Successful Submission: 2025-09-01 21:44:10

Version Information (C)

Time of First Successful Submission: 2025-09-01 21:45:37

Version Information (x86)

Time of First Successful Submission: 2025-09-01 21:46:38

Metadata and Data (Python)

Time of First Successful Submission: 2025-09-01 21:54:35

Metadata and Data (C)

Time of First Successful Submission: 2025-09-01 21:56:23

Metadata and Data (x86)

Time of First Successful Submission: 2025-09-01 21:58:50

Input Restrictions (Python)

Time of First Successful Submission: 2025-09-01 22:00:32

Input Restrictions (C)

Time of First Successful Submission: 2025-09-01 22:05:17

Input Restrictions (x86)

Time of First Successful Submission: 2025-09-01 22:07:41

Behold the cIMG! (Python)

Time of First Successful Submission: 2025-09-01 22:10:10

Behold the cIMG! (C)

Time of First Successful Submission: 2025-09-01 22:11:09

Behold the cIMG! (x86)

Time of First Successful Submission: 2025-09-01 22:13:07

A Basic cIMG (Python)

Time of First Successful Submission: 2025-09-01 22:24:10

A Basic cIMG (C)

Time of First Successful Submission: 2025-09-01 22:26:09

A Basic cIMG (x86)

Time of First Successful Submission: 2025-09-01 22:28:36

Internal State Mini (C)

Time of First Successful Submission: 2025-09-01 22:41:21

Internal State Mini (x86)

Time of First Successful Submission: 2025-09-01 22:44:05

Internal State (C)

Time of First Successful Submission: 2025-09-03 12:31:22

Internal State (x86)

Time of First Successful Submission: 2025-09-03 12:35:06

File Formats: Directives (C)

Time of First Successful Submission: 2025-09-03 13:09:38

File Formats: Directives (x86)

Time of First Successful Submission: 2025-09-03 13:12:17

The Patch Directive

Time of First Successful Submission: 2025-09-03 14:29:04

Optimizing for Space

Time of First Successful Submission: 2025-09-03 14:53:14

Tweaking Images

Time of First Successful Submission: 2025-09-03 15:35:30

Storage and Retrieval

Time of First Successful Submission: 2025-09-06 13:53:32

Extracting Knowledge

Time of First Successful Submission: 2025-09-06 14:10:13

Advanced Sprites

Time of First Successful Submission: 2025-09-06 20:29:15

Accessing Resources

Time of First Successful Submission: 2025-09-06 20:39:11

Unsafe Animations

Time of First Successful Submission: 2025-09-06 21:28:59

Animations

Time of First Successful Submission: 2025-09-06 21:55:38

Interoperability: Patching Data

Time of First Successful Submission: 2025-09-06 22:24:40

Patching Code

Time of First Successful Submission: 2025-09-06 22:37:46

Patching Control Flow

Time of First Successful Submission: 2025-09-06 22:51:42

Your First Overflow (easy)

Time of First Successful Submission: 2025-08-24 08:09:34

Your First Overflow (hard)

Time of First Successful Submission: 2025-08-24 08:11:11

Precision (easy)

Time of First Successful Submission: 2025-08-24 08:13:21

Precision (hard)

Time of First Successful Submission: 2025-08-24 08:15:33

Variable Control (easy)

Time of First Successful Submission: 2025-09-01 09:46:25

Variable Control (hard)

Time of First Successful Submission: 2025-09-01 09:52:13

Control Hijack (easy)

Time of First Successful Submission: 2025-09-01 09:56:22

Control Hijack (hard)

Time of First Successful Submission: 2025-09-01 09:59:12

Tricky Control Hijack (easy)

Time of First Successful Submission: 2025-09-01 10:08:47

Tricky Control Hijack (hard)

Time of First Successful Submission: 2025-09-01 10:11:13

PIEs (easy)

Time of First Successful Submission: 2025-09-01 10:22:10

PIEs (hard)

Time of First Successful Submission: 2025-09-01 10:24:50

String Lengths (easy)

Time of First Successful Submission: 2025-09-01 10:41:49

String Lengths (hard)

Time of First Successful Submission: 2025-09-01 10:43:29

Basic Shellcode

Time of First Successful Submission: 2025-09-01 11:11:49

NOP Sleds

Time of First Successful Submission: 2025-09-01 11:14:28

NULL-Free Shellcode

Time of First Successful Submission: 2025-09-01 11:40:11

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2025-09-01 12:24:24

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2025-09-01 12:27:43

Hijack to Shellcode (easy)

Time of First Successful Submission: 2025-09-01 12:32:04

Hijack to Shellcode (hard)

Time of First Successful Submission: 2025-09-01 12:34:10

ECB-to-Win (easy)

Time of First Successful Submission: 2025-09-26 18:45:56

ECB-to-Win (hard)

Time of First Successful Submission: 2025-09-26 18:51:11

ECB-to-Shellcode (easy)

Time of First Successful Submission: 2025-09-26 18:57:04

ECB-to-Shellcode (hard)

Time of First Successful Submission: 2025-09-26 19:00:45

CIMG Screenshots

Time of First Successful Submission: 2025-10-08 12:48:31

CIMG Screenshots 2

Time of First Successful Submission: 2025-10-08 18:57:51

Wily Webserver

Time of First Successful Submission: 2025-09-25 21:27:29

The Watering Hole

Time of First Successful Submission: 2025-09-26 07:17:17

Secure Chat 1

Time of First Successful Submission: 2025-10-10 06:12:02

Secure Chat 2

Time of First Successful Submission: 2025-10-10 07:49:30


Program Security

157 / 162 111 / 9555


ello ackers!

Time of First Successful Submission: 2025-10-10 08:05:26

Syscall Smuggler

Time of First Successful Submission: 2025-10-10 08:22:25

Syscall Shenanigans

Time of First Successful Submission: 2025-10-10 08:28:21

Byte Budget

Time of First Successful Submission: 2025-11-25 17:13:46

ClobberCode

Time of First Successful Submission: 2025-11-25 17:24:55

Diverse Delivery

Time of First Successful Submission: 2025-11-25 17:28:23

Pocket Payload

Time of First Successful Submission: 2025-11-25 17:29:38

Micro Menace

Time of First Successful Submission: 2025-11-27 17:16:02

Login Leakage (Easy)

Time of First Successful Submission: 2025-10-10 09:39:18

Login Leakage (Hard)

Time of First Successful Submission: 2025-10-10 09:40:35

Bounds Breaker (Easy)

Time of First Successful Submission: 2025-10-10 09:44:09

Bounds Breaker (Hard)

Time of First Successful Submission: 2025-10-10 09:46:35

Casting Catastrophe (Easy)

Time of First Successful Submission: 2025-10-10 10:05:16

Casting Catastrophe (Hard)

Time of First Successful Submission: 2025-10-10 10:06:50

Pointer Problems (Easy)

Time of First Successful Submission: 2025-10-10 10:31:04

Pointer Problems (Hard)

Time of First Successful Submission: 2025-10-10 11:04:15

Anomalous Array (Easy)

Time of First Successful Submission: 2025-10-10 11:13:15

Anomalous Array (Hard)

Time of First Successful Submission: 2025-10-10 11:23:40

Now you got it (Easy)

Time of First Successful Submission: 2025-10-13 06:01:10

Now you got it (Hard)

Time of First Successful Submission: 2025-10-13 06:19:53

Loop Lunacy (Easy)

Time of First Successful Submission: 2025-10-13 06:50:28

Loop Lunacy (Hard)

Time of First Successful Submission: 2025-10-13 07:36:16

Nosy Neighbor (Easy)

Time of First Successful Submission: 2025-10-13 07:39:40

Nosy Neighbor (Hard)

Time of First Successful Submission: 2025-10-13 07:40:36

Recursive Ruin (Easy)

Time of First Successful Submission: 2025-10-21 06:33:38

Recursive Ruin (Hard)

Time of First Successful Submission: 2025-10-21 06:46:39

Lingering Leftover (Easy)

Time of First Successful Submission: 2025-10-21 06:57:18

Lingering Leftover (Hard)

Time of First Successful Submission: 2025-10-21 07:00:41

Latent Leak (Easy)

Time of First Successful Submission: 2025-11-25 19:49:38

Latent Leak (Hard)

Time of First Successful Submission: 2025-11-25 19:53:21

Fork Foolery (Easy)

Time of First Successful Submission: 2025-11-26 11:33:52

Fork Foolery (Hard)

Time of First Successful Submission: 2025-11-26 11:45:54

Canary Conundrum (Easy)

Time of First Successful Submission: 2025-11-26 13:36:56

Canary Conundrum (Hard)

Time of First Successful Submission: 2025-11-26 17:30:30

A Crafty Clobber (Easy)

Time of First Successful Submission: 2025-11-26 17:38:15

A Crafty Clobber (Hard)

Time of First Successful Submission: 2025-11-26 17:43:48

Can It Fizz?

Time of First Successful Submission: 2025-11-26 19:27:49

Does It Buzz?

Time of First Successful Submission: 2025-11-27 10:57:44

Make It FizzBuzz

Time of First Successful Submission: 2025-11-27 13:33:33

Terrible Token (Easy)

Time of First Successful Submission: 2025-08-24 08:19:18

Terrible Token (Hard)

Time of First Successful Submission: 2025-08-24 08:20:25

Tangled Ticket (Easy)

Time of First Successful Submission: 2025-08-24 08:23:12

Tangled Ticket (Hard)

Time of First Successful Submission: 2025-08-24 08:32:20

Bit Bender

Time of First Successful Submission: 2025-10-13 08:15:53

Substitution Sorcery

Time of First Successful Submission: 2025-10-13 08:20:17

Meager Mangler (Easy)

Time of First Successful Submission: 2025-08-24 08:51:48

Meager Mangler (Hard)

Time of First Successful Submission: 2025-08-24 08:58:29

Monstrous Mangler (Easy)

Time of First Successful Submission: 2025-10-12 18:30:14

Monstrous Mangler (Hard)

Time of First Successful Submission: 2025-10-12 18:50:51

Patched Up (Easy)

Time of First Successful Submission: 2025-10-12 17:18:00

Patched Up (Hard)

Time of First Successful Submission: 2025-10-12 17:20:00

Puzzle Patch (Easy)

Time of First Successful Submission: 2025-10-12 17:24:15

Puzzle Patch (Hard)

Time of First Successful Submission: 2025-10-12 17:25:55

Patch Perfect (Easy)

Time of First Successful Submission: 2025-10-12 17:27:52

Patch Perfect (Hard)

Time of First Successful Submission: 2025-10-12 17:34:36

Trust the Yancode (Easy)

Time of First Successful Submission: 2025-10-13 12:54:06

Trust the Yancode (Hard)

Time of First Successful Submission: 2025-10-13 12:57:07

Know the Yancode (Easy)

Time of First Successful Submission: 2025-10-13 13:01:22

Know the Yancode (Hard)

Time of First Successful Submission: 2025-10-13 13:05:04

Master the Yancode (Easy)

Time of First Successful Submission: 2025-12-04 12:37:10

Master the Yancode (Hard)

Time of First Successful Submission: 2025-12-04 12:54:21

Transcend the Yancode (Easy)

Time of First Successful Submission: 2025-12-04 13:07:53

Transcend the Yancode (Hard)

Time of First Successful Submission: 2025-12-04 13:21:04

The Yanalyzer (Easy)

Time of First Successful Submission: 2025-12-04 17:39:36

The Yanalyzer (Hard)

Time of First Successful Submission: 2025-12-04 18:01:43

The Yangler (Easy)

Time of First Successful Submission: 2025-12-05 12:33:52

The Yangler (Hard)

Time of First Successful Submission: 2025-12-05 12:54:39

Yancraft (Easy)

Time of First Successful Submission: 2025-12-05 17:46:53

Yancraft (Hard)

Time of First Successful Submission: 2025-12-05 18:05:33

When the Cow Says Moo

Time of First Successful Submission: 2025-10-12 17:58:32

Predictable Migration

Time of First Successful Submission: 2025-12-02 18:18:36

Hashing Heifers

Time of First Successful Submission: 2025-12-02 18:45:51

Salty Stampede

Time of First Successful Submission: 2025-12-02 19:10:53

Loose Link (Easy)

Time of First Successful Submission: 2025-11-27 17:36:45

Loose Link (Hard)

Time of First Successful Submission: 2025-11-27 17:40:00

Call Chain (Easy)

Time of First Successful Submission: 2025-11-27 18:01:12

Call Chain (Hard)

Time of First Successful Submission: 2025-11-27 18:04:55

Chain of Command (Easy)

Time of First Successful Submission: 2025-11-27 18:10:34

Chain of Command (Hard)

Time of First Successful Submission: 2025-11-27 18:12:55

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2025-11-27 18:52:33

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2025-11-27 18:56:16

Stop, Pop and ROP II (Easy)

Time of First Successful Submission: 2025-11-28 11:54:12

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2025-11-28 11:55:42

Indirect Invocation (Easy)

Time of First Successful Submission: 2025-11-28 11:57:45

Indirect Invocation (Hard)

Time of First Successful Submission: 2025-11-28 11:59:41

Leaky Libc (Easy)

Time of First Successful Submission: 2025-11-28 11:22:46

Leaky Libc (Hard)

Time of First Successful Submission: 2025-11-28 11:26:06

Putsception (Easy)

Time of First Successful Submission: 2025-11-28 11:47:16

Putsception (Hard)

Time of First Successful Submission: 2025-11-28 11:50:08

Pivotal Prelude (Easy)

Time of First Successful Submission: 2025-11-28 14:34:35

Pivotal Prelude (Hard)

Time of First Successful Submission: 2025-11-28 14:40:55

Pivotal Pointer (Easy)

Time of First Successful Submission: 2025-11-28 19:07:52

Pivotal Pointer (Hard)

Time of First Successful Submission: 2025-11-28 19:12:45

Pivotal Payload (Easy)

Time of First Successful Submission: 2025-12-01 16:58:58

Pivotal Payload (Hard)

Time of First Successful Submission: 2025-12-01 17:02:55

Pivotal Pursuit (Easy)

Time of First Successful Submission: 2025-12-16 17:53:06

Pivotal Pursuit (Hard)

Time of First Successful Submission: 2025-12-16 18:08:09

Guarded Gadgets (Easy)

Time of First Successful Submission: 2025-12-18 07:41:48

Guarded Gadgets (Hard)

Time of First Successful Submission: 2025-12-18 07:44:45

ROP Roulette (Easy)

Time of First Successful Submission: 2025-12-18 12:36:24

ROP Roulette (Hard)

Time of First Successful Submission: 2025-12-18 12:39:49

Libc Lottery (Easy)

Time of First Successful Submission: 2026-02-17 14:09:06

Libc Lottery (Hard)

Time of First Successful Submission: 2026-02-17 14:15:06

Freebie (Easy)

Time of First Successful Submission: 2025-12-18 17:27:21

Freebie (Hard)

Time of First Successful Submission: 2025-12-18 17:28:23

Freebin Feint (Easy)

Time of First Successful Submission: 2025-12-18 17:39:21

Freebin Feint (Hard)

Time of First Successful Submission: 2025-12-18 17:40:44

Free Flag Fumble (Easy)

Time of First Successful Submission: 2025-12-18 17:44:03

Free Flag Fumble (Hard)

Time of First Successful Submission: 2025-12-18 17:45:33

Fickle Free (Easy)

Time of First Successful Submission: 2025-12-23 13:29:58

Fickle Free (Hard)

Time of First Successful Submission: 2025-12-23 13:34:13

Malloc Mirage (Easy)

Time of First Successful Submission: 2025-12-23 16:26:35

Malloc Mirage (Hard)

Time of First Successful Submission: 2025-12-23 16:28:28

Seeking Secrets (Easy)

Time of First Successful Submission: 2025-12-23 16:41:46

Seeking Secrets (Hard)

Time of First Successful Submission: 2025-12-23 16:44:22

Seeking Substantial Secrets (Easy)

Time of First Successful Submission: 2025-12-23 17:24:38

Seeking Substantial Secrets (Hard)

Time of First Successful Submission: 2025-12-23 17:26:04

Seeking Spanless Secrets (Easy)

Time of First Successful Submission: 2025-12-23 18:18:05

Seeking Spanless Secrets (Hard)

Time of First Successful Submission: 2025-12-23 18:20:11

Seeking Smuggled Secrets (Easy)

Time of First Successful Submission: 2025-12-23 18:34:50

Seeking Smuggled Secrets (Hard)

Time of First Successful Submission: 2025-12-23 18:36:39

Sus Sequence (Easy)

Time of First Successful Submission: 2025-12-24 05:56:07

Sus Sequence (Hard)

Time of First Successful Submission: 2025-12-24 05:57:44

Echo Emanations (Easy)

Time of First Successful Submission: 2025-12-24 08:41:58

Echo Emanations (Hard)

Time of First Successful Submission: 2025-12-24 08:53:02

Stack Spoofing (Easy)

Time of First Successful Submission: 2025-12-24 09:09:23

Stack Spoofing (Hard)

Time of First Successful Submission: 2025-12-24 09:12:41

Stack Summoning (Easy)

Time of First Successful Submission: 2025-12-24 10:02:10

Stack Summoning (Hard)

Time of First Successful Submission: 2025-12-24 10:03:44

Enterprising Echo (Easy)

Time of First Successful Submission: 2025-12-24 10:35:30

Enterprising Echo (Hard)

Time of First Successful Submission: 2025-12-24 11:00:44

Ephemeral Echo (Easy)

Time of First Successful Submission: 2025-12-24 11:18:14

Ephemeral Echo (Hard)

Time of First Successful Submission: 2025-12-24 11:19:38

Seeking Safe Secrets (Easy)

Time of First Successful Submission: 2025-12-24 19:46:17

Seeking Safe Secrets (Hard)

Time of First Successful Submission: 2025-12-24 19:54:04

Sus Sequence Safety (Easy)

Time of First Successful Submission: 2025-12-25 08:47:48

Sus Sequence Safety (Hard)

Time of First Successful Submission: 2025-12-25 08:51:55

Safely Stack Summoning (Easy)

Time of First Successful Submission: 2025-12-25 10:47:13

Safely Stack Summoning (Hard)

Time of First Successful Submission: 2025-12-25 10:50:59

Overlapping Odyssey (Easy)

Time of First Successful Submission: 2025-12-25 12:50:24

Overlapping Odyssey (Hard)

Time of First Successful Submission: 2025-12-25 12:51:29

Tcache Terror (Easy)

Time of First Successful Submission: 2025-12-25 19:00:57

Tcache Terror (Hard)

Time of First Successful Submission: 2025-12-25 19:08:25

Containment Composition (Easy)

Time of First Successful Submission: 2025-12-26 09:07:33

Containment Composition (Hard)

Time of First Successful Submission: 2025-12-26 09:32:30

Constant Corruption (Easy)

Time of First Successful Submission: 2025-12-26 16:49:59

Constant Corruption (Hard)

Time of First Successful Submission: 2025-12-26 17:04:51

Return to YanLand (Easy)

Time of First Successful Submission: 2026-01-02 12:46:13

Return to YanLand (Hard)

Time of First Successful Submission: 2026-01-02 13:23:51

Escape from YanLand (Easy)

Time of First Successful Submission: 2026-01-02 17:56:56

Escape from YanLand (Hard)

Time of First Successful Submission: 2026-01-02 18:31:43

The YanFilter (Easy)

Time of First Successful Submission: 2026-01-03 16:41:06

The YanFilter (Hard)

Time of First Successful Submission: 2026-01-03 16:48:34

The Great YanFilter (Easy)

Time of First Successful Submission: 2026-02-02 13:45:21

The Great YanFilter (Hard)

Time of First Successful Submission: 2026-02-02 14:01:20

Yan85 Reborn (Easy)

Time of First Successful Submission: 2026-02-16 18:30:01

Yan85 Reborn (Hard)

Time of First Successful Submission: 2026-02-17 11:25:17


System Security

17 / 95 1519 / 3324


chroot-escape-basic

Time of First Successful Submission: 2026-02-18 06:03:22

chroot-shellcode

Time of First Successful Submission: 2026-02-18 06:26:56

chroot-proper

Time of First Successful Submission: 2026-02-18 06:51:53

seccomp-basic

Time of First Successful Submission: 2026-02-18 07:05:14

seccomp-linkat

Time of First Successful Submission: 2026-02-18 07:14:08

seccomp-fchdir

Time of First Successful Submission: 2026-02-18 07:15:50

seccomp-rechroot

Time of First Successful Submission: 2026-02-18 07:36:10

seccomp-only

Time of First Successful Submission: 2026-02-18 08:43:01

seccomp-arch32

Time of First Successful Submission: 2026-02-18 08:56:39

seccomp-minimal

Time of First Successful Submission: 2026-02-20 08:29:37

seccomp-timebased

Time of First Successful Submission: 2026-02-20 10:14:40

seccomp-readonly

Time of First Successful Submission: 2026-02-20 10:38:32

process-isolation

Time of First Successful Submission: 2026-02-20 10:52:05

mount-namespace

Time of First Successful Submission: 2026-02-25 11:13:31

mount-cleanup

Time of First Successful Submission: 2026-02-25 11:51:32

mount-readonly

Time of First Successful Submission: 2026-02-25 12:03:08

mount-shellcode

Time of First Successful Submission: 2026-02-28 10:57:51


Start Here

10 / 12 17911 / 43252


Using the Terminal

Time of First Successful Submission: 2025-08-23 18:16:23

Using the VSCode Workspace

Time of First Successful Submission: 2025-08-23 18:19:02

Using the GUI Desktop

Time of First Successful Submission: 2025-08-24 07:35:59

Pasting into the Desktop

Time of First Successful Submission: 2025-08-24 07:36:53

Restarting Challenges

Time of First Successful Submission: 2025-08-24 07:38:14

Challenge Programs

Time of First Successful Submission: 2025-08-24 07:39:26

The Flag File

Time of First Successful Submission: 2025-08-24 07:40:12

Using Privileged Mode

Time of First Successful Submission: 2025-08-24 07:42:18

Persistent Home Directories - One

Time of First Successful Submission: 2025-08-24 07:43:24

Persistent Home Directories - Two

Time of First Successful Submission: 2025-08-24 07:44:04


Linux Luminarium

128 / 128 896 / 32341


Intro to Commands

Time of First Successful Submission: 2025-08-24 07:45:31

Intro to Arguments

Time of First Successful Submission: 2025-08-24 07:45:55

Command History

Time of First Successful Submission: 2025-08-24 07:46:17

The Root

Time of First Successful Submission: 2025-08-24 07:47:46

Program and absolute paths

Time of First Successful Submission: 2025-08-24 07:48:14

Position thy self

Time of First Successful Submission: 2025-08-24 07:48:59

Position elsewhere

Time of First Successful Submission: 2025-08-24 07:49:37

implicit relative paths, from /

Time of First Successful Submission: 2025-08-24 07:50:47

explicit relative paths, from /

Time of First Successful Submission: 2025-08-24 07:51:15

implicit relative path

Time of First Successful Submission: 2025-08-24 07:52:11

home sweet home

Time of First Successful Submission: 2025-08-24 07:52:50

cat: not the pet, but the command!

Time of First Successful Submission: 2025-08-25 09:55:31

catting absolute paths

Time of First Successful Submission: 2025-08-25 09:55:55

more catting practice

Time of First Successful Submission: 2025-08-25 09:56:22

grepping for a needle in a haystack

Time of First Successful Submission: 2025-08-25 09:56:47

comparing files

Time of First Successful Submission: 2025-08-25 09:57:53

listing files

Time of First Successful Submission: 2025-08-25 09:58:18

touching files

Time of First Successful Submission: 2025-08-25 09:58:42

removing files

Time of First Successful Submission: 2025-08-25 09:59:06

moving files

Time of First Successful Submission: 2025-08-25 09:59:41

copying files

Time of First Successful Submission: 2025-12-16 12:06:48

hidden files

Time of First Successful Submission: 2025-08-25 10:00:11

An Epic Filesystem Quest

Time of First Successful Submission: 2025-08-25 10:02:55

making directories

Time of First Successful Submission: 2025-08-25 10:03:22

finding files

Time of First Successful Submission: 2025-08-25 10:07:10

linking files

Time of First Successful Submission: 2025-08-25 10:08:51

Learning From Documentation

Time of First Successful Submission: 2025-08-25 09:40:34

Learning Complex Usage

Time of First Successful Submission: 2025-08-25 09:41:55

Reading Manuals

Time of First Successful Submission: 2025-08-25 09:43:56

Searching Manuals

Time of First Successful Submission: 2025-08-25 09:45:00

Searching For Manuals

Time of First Successful Submission: 2025-08-25 09:48:01

Helpful Programs

Time of First Successful Submission: 2025-08-25 09:49:10

Help for Builtins

Time of First Successful Submission: 2025-08-25 09:54:23

Matching with *

Time of First Successful Submission: 2025-08-25 10:14:24

Matching with ?

Time of First Successful Submission: 2025-08-25 10:16:10

Matching with []

Time of First Successful Submission: 2025-08-25 10:17:02

Matching paths with []

Time of First Successful Submission: 2025-08-25 10:18:17

Multiple globs

Time of First Successful Submission: 2025-08-25 10:19:05

Mixing globs

Time of First Successful Submission: 2025-08-25 10:20:02

Exclusionary globbing

Time of First Successful Submission: 2025-08-25 10:20:36

Tab completion

Time of First Successful Submission: 2025-08-25 10:21:11

Multiple options for tab completion

Time of First Successful Submission: 2025-08-25 10:22:13

Tab completion on commands

Time of First Successful Submission: 2025-08-25 10:22:41

Redirecting output

Time of First Successful Submission: 2025-08-25 10:54:30

Redirecting more output

Time of First Successful Submission: 2025-08-25 10:55:36

Appending output

Time of First Successful Submission: 2025-08-25 10:56:46

Redirecting errors

Time of First Successful Submission: 2025-08-25 10:57:39

Redirecting input

Time of First Successful Submission: 2025-08-25 10:58:12

Grepping stored results

Time of First Successful Submission: 2025-08-25 10:59:18

Grepping live output

Time of First Successful Submission: 2025-08-25 11:00:04

Grepping errors

Time of First Successful Submission: 2025-08-25 11:01:59

Filtering with grep -v

Time of First Successful Submission: 2025-08-25 11:03:37

Filtering with sed

Time of First Successful Submission: 2025-12-16 12:08:24

Duplicating piped data with tee

Time of First Successful Submission: 2025-08-25 11:06:37

Process substitution for input

Time of First Successful Submission: 2025-08-25 11:09:34

Writing to multiple programs

Time of First Successful Submission: 2025-08-25 11:11:50

Split-piping stderr and stdout

Time of First Successful Submission: 2025-08-25 11:36:26

Named pipes

Time of First Successful Submission: 2025-08-25 11:40:58

Printing Variables

Time of First Successful Submission: 2025-08-25 11:46:19

Setting Variables

Time of First Successful Submission: 2025-08-25 11:46:42

Multi-word Variables

Time of First Successful Submission: 2025-08-25 11:47:05

Exporting Variables

Time of First Successful Submission: 2025-08-25 11:49:20

Printing Exported Variables

Time of First Successful Submission: 2025-08-25 11:49:41

Storing Command Output

Time of First Successful Submission: 2025-08-25 11:50:49

Reading Input

Time of First Successful Submission: 2025-08-25 11:51:42

Reading Files

Time of First Successful Submission: 2025-08-25 11:53:38

Translating characters

Time of First Successful Submission: 2025-08-25 11:56:33

Deleting characters

Time of First Successful Submission: 2025-08-25 11:58:01

Deleting newlines

Time of First Successful Submission: 2025-08-25 11:58:48

Extracting the first lines with head

Time of First Successful Submission: 2025-08-25 11:59:44

Extracting specific sections of text

Time of First Successful Submission: 2025-08-25 12:01:13

Sorting data

Time of First Successful Submission: 2025-08-25 12:01:52

Listing Processes

Time of First Successful Submission: 2025-08-26 06:32:33

Killing Processes

Time of First Successful Submission: 2025-08-26 06:33:19

Interrupting Processes

Time of First Successful Submission: 2025-08-26 06:33:44

Killing Misbehaving Processes

Time of First Successful Submission: 2025-08-26 07:13:01

Suspending Processes

Time of First Successful Submission: 2025-08-26 06:45:24

Resuming Processes

Time of First Successful Submission: 2025-08-26 06:45:47

Backgrounding Processes

Time of First Successful Submission: 2025-08-26 06:47:39

Foregrounding Processes

Time of First Successful Submission: 2025-08-26 06:48:05

Starting Backgrounded Processes

Time of First Successful Submission: 2025-08-26 06:48:27

Process Exit Codes

Time of First Successful Submission: 2025-08-26 06:48:58

Becoming root with su

Time of First Successful Submission: 2025-08-25 13:58:15

Other users with su

Time of First Successful Submission: 2025-08-25 13:58:59

Cracking passwords

Time of First Successful Submission: 2025-08-25 14:00:48

Using sudo

Time of First Successful Submission: 2025-08-25 14:04:34

Changing File Ownership

Time of First Successful Submission: 2025-08-25 14:06:09

Groups and Files

Time of First Successful Submission: 2025-08-25 14:06:53

Fun With Groups Names

Time of First Successful Submission: 2025-08-25 14:07:46

Changing Permissions

Time of First Successful Submission: 2025-08-25 14:08:57

Executable Files

Time of First Successful Submission: 2025-08-25 14:09:33

Permission Tweaking Practice

Time of First Successful Submission: 2025-08-25 14:11:18

Permissions Setting Practice

Time of First Successful Submission: 2025-08-25 14:13:09

The SUID Bit

Time of First Successful Submission: 2025-08-25 14:14:58

Chaining with Semicolons

Time of First Successful Submission: 2025-08-26 07:15:08

Building on Success

Time of First Successful Submission: 2025-08-26 07:16:06

Handling Failure

Time of First Successful Submission: 2025-08-26 07:17:06

Your First Shell Script

Time of First Successful Submission: 2025-08-26 07:18:17

Redirecting Script Output

Time of First Successful Submission: 2025-08-26 07:18:50

Executable Shell Scripts

Time of First Successful Submission: 2025-08-26 07:21:00

Understanding Shebangs

Time of First Successful Submission: 2025-08-26 07:22:24

Scripting with Arguments

Time of First Successful Submission: 2025-08-26 07:23:06

Scripting with Conditionals

Time of First Successful Submission: 2025-08-26 07:24:45

Scripting with Default Cases

Time of First Successful Submission: 2025-08-26 07:25:30

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-08-26 07:27:31

Reading Shell Scripts

Time of First Successful Submission: 2025-08-26 07:28:05

Launching Screen

Time of First Successful Submission: 2025-08-25 14:20:12

Detaching and Attaching

Time of First Successful Submission: 2025-08-25 14:22:39

Finding Sessions

Time of First Successful Submission: 2025-08-25 14:23:52

Switching Windows

Time of First Successful Submission: 2025-08-25 14:26:26

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-08-25 14:27:24

Switching Windows (tmux)

Time of First Successful Submission: 2025-08-25 14:29:01

The PATH Variable

Time of First Successful Submission: 2025-08-25 14:30:26

Setting PATH

Time of First Successful Submission: 2025-08-25 14:31:02

Finding Commands

Time of First Successful Submission: 2025-08-25 14:32:27

Adding Commands

Time of First Successful Submission: 2025-08-25 14:36:21

Hijacking Commands

Time of First Successful Submission: 2025-08-25 14:48:24

Bashrc Backdoor

Time of First Successful Submission: 2025-08-25 14:51:11

Sniffing Input

Time of First Successful Submission: 2025-08-25 15:02:58

Overshared Directories

Time of First Successful Submission: 2025-08-25 15:08:03

Tricky Linking

Time of First Successful Submission: 2025-08-25 15:11:37

Sniffing Process Arguments

Time of First Successful Submission: 2025-08-26 07:29:06

Snooping on Configurations

Time of First Successful Submission: 2025-08-26 07:29:56

The Fork Bomb

Time of First Successful Submission: 2025-08-26 07:54:37

Disk-Space Doomsday

Time of First Successful Submission: 2025-08-26 07:58:44

rm -rf /

Time of First Successful Submission: 2025-08-26 08:00:30

Life after rm -rf /

Time of First Successful Submission: 2025-08-26 08:02:55

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-08-26 08:08:12


Computing 101

92 / 94 354 / 21491


Your First Register

Time of First Successful Submission: 2025-08-25 18:19:46

Your First Syscall

Time of First Successful Submission: 2025-08-25 18:20:32

Exit Codes

Time of First Successful Submission: 2025-08-25 18:21:13

Building Executables

Time of First Successful Submission: 2025-08-25 18:25:05

Moving Between Registers

Time of First Successful Submission: 2025-08-25 18:25:45

Loading From Memory

Time of First Successful Submission: 2025-08-26 08:24:53

More Loading Practice

Time of First Successful Submission: 2025-08-26 08:25:35

Dereferencing Pointers

Time of First Successful Submission: 2025-08-26 08:26:54

Dereferencing Yourself

Time of First Successful Submission: 2025-08-26 08:27:44

Dereferencing with Offsets

Time of First Successful Submission: 2025-08-26 09:08:02

Stored Addresses

Time of First Successful Submission: 2025-08-26 09:09:48

Double Dereference

Time of First Successful Submission: 2025-08-26 09:11:06

The Stack

Time of First Successful Submission: 2026-02-19 07:02:47

Stack Offsets

Time of First Successful Submission: 2026-02-19 07:03:30

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-19 07:06:41

Popping From the Stack

Time of First Successful Submission: 2026-02-19 07:08:53

Disassembling Programs

Time of First Successful Submission: 2026-02-19 07:13:55

Tracing Syscalls

Time of First Successful Submission: 2025-08-26 08:11:00

Starting GDB

Time of First Successful Submission: 2025-08-26 08:19:20

Quitting GDB

Time of First Successful Submission: 2026-02-19 07:12:28

Starting Programs in GDB

Time of First Successful Submission: 2025-08-26 08:19:48

Disassembling in GDB

Time of First Successful Submission: 2026-02-19 07:14:25

Stepping Through Instructions

Time of First Successful Submission: 2026-02-19 07:16:24

Reading Register Values

Time of First Successful Submission: 2026-02-19 07:16:55

Popping Stack Values

Time of First Successful Submission: 2026-02-19 07:17:27

Examining Memory

Time of First Successful Submission: 2026-02-19 07:18:16

Examining Stack Pointers

Time of First Successful Submission: 2026-02-19 07:20:11

Cooperative Debugging

Time of First Successful Submission: 2026-02-19 07:22:55

Writing Output

Time of First Successful Submission: 2025-08-26 09:15:52

Chaining Syscalls

Time of First Successful Submission: 2025-08-26 09:17:14

Writing Strings

Time of First Successful Submission: 2025-08-26 09:18:36

Reading Data

Time of First Successful Submission: 2025-08-26 09:20:09

Comparing Values

Time of First Successful Submission: 2026-02-19 07:39:32

Comparing Characters

Time of First Successful Submission: 2026-02-19 07:41:00

Conditional Control Flow

Time of First Successful Submission: 2026-02-19 07:42:29

Comparing Strings

Time of First Successful Submission: 2026-02-19 07:43:29

Reverse the Password

Time of First Successful Submission: 2026-02-19 07:45:59

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-19 07:53:27

Looping

Time of First Successful Submission: 2026-02-19 07:55:10

Reverse the Calculation

Time of First Successful Submission: 2026-02-19 07:56:03

Reverse the Reverse

Time of First Successful Submission: 2026-02-19 07:56:39

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-19 07:57:20

Loops on Data

Time of First Successful Submission: 2026-02-19 07:58:10

set-register

Time of First Successful Submission: 2025-08-26 10:06:35

set-multiple-registers

Time of First Successful Submission: 2025-08-26 10:08:27

add-to-register

Time of First Successful Submission: 2025-08-26 10:09:11

linear-equation-registers

Time of First Successful Submission: 2025-08-26 10:10:38

integer-division

Time of First Successful Submission: 2025-08-26 10:13:27

modulo-operation

Time of First Successful Submission: 2025-08-26 10:14:01

set-upper-byte

Time of First Successful Submission: 2025-08-26 10:14:48

efficient-modulo

Time of First Successful Submission: 2025-08-26 10:18:30

byte-extraction

Time of First Successful Submission: 2025-08-26 10:22:29

bitwise-and

Time of First Successful Submission: 2025-08-26 10:24:15

check-even

Time of First Successful Submission: 2025-08-26 10:31:59

memory-read

Time of First Successful Submission: 2025-08-26 10:33:22

memory-write

Time of First Successful Submission: 2025-08-26 10:33:58

memory-increment

Time of First Successful Submission: 2025-08-26 10:37:04

byte-access

Time of First Successful Submission: 2025-08-26 10:42:12

memory-size-access

Time of First Successful Submission: 2025-08-26 10:49:51

little-endian-write

Time of First Successful Submission: 2025-08-26 10:57:53

memory-sum

Time of First Successful Submission: 2025-08-26 11:03:31

stack-subtraction

Time of First Successful Submission: 2025-08-26 11:07:17

swap-stack-values

Time of First Successful Submission: 2025-08-26 11:27:52

average-stack-values

Time of First Successful Submission: 2025-08-26 11:34:01

absolute-jump

Time of First Successful Submission: 2025-08-26 11:35:57

relative-jump

Time of First Successful Submission: 2025-08-26 11:42:56

jump-trampoline

Time of First Successful Submission: 2025-08-26 11:46:56

conditional-jump

Time of First Successful Submission: 2025-08-26 12:06:58

indirect-jump

Time of First Successful Submission: 2025-08-26 12:13:45

average-loop

Time of First Successful Submission: 2025-08-26 12:53:53

count-non-zero

Time of First Successful Submission: 2025-08-26 13:03:37

string-lower

Time of First Successful Submission: 2025-08-26 13:20:17

most-common-byte

Time of First Successful Submission: 2025-08-26 14:36:23

Exit

Time of First Successful Submission: 2025-08-26 18:44:47

Socket

Time of First Successful Submission: 2025-08-26 18:58:24

Bind

Time of First Successful Submission: 2025-08-26 20:01:10

Listen

Time of First Successful Submission: 2025-08-26 20:42:08

Accept

Time of First Successful Submission: 2025-08-26 20:53:07

Static Response

Time of First Successful Submission: 2025-08-26 21:22:58

Dynamic Response

Time of First Successful Submission: 2025-08-26 21:56:02

Iterative GET Server

Time of First Successful Submission: 2025-08-26 21:57:35

Concurrent GET Server

Time of First Successful Submission: 2025-08-27 06:34:03

Concurrent POST Server

Time of First Successful Submission: 2025-08-27 10:52:32

Web Server

Time of First Successful Submission: 2025-08-27 10:53:10

Debugging Programs

Time of First Successful Submission: 2025-08-26 14:49:43

Inspecting Registers

Time of First Successful Submission: 2025-08-26 14:52:26

Examining Memory

Time of First Successful Submission: 2025-08-26 14:58:30

Setting Breakpoints

Time of First Successful Submission: 2025-08-26 15:05:53

GDB Scripting

Time of First Successful Submission: 2025-08-26 17:48:41

Modifying Data

Time of First Successful Submission: 2025-08-26 17:57:45

Modifying Execution

Time of First Successful Submission: 2025-08-26 18:02:22

Broken Functions

Time of First Successful Submission: 2025-08-26 18:23:05


Playing With Programs

116 / 116 343 / 23362


What's the password?

Time of First Successful Submission: 2025-08-27 12:24:52

... and again!

Time of First Successful Submission: 2025-08-27 12:25:22

Newline Troubles

Time of First Successful Submission: 2025-08-27 12:27:15

Reasoning about files

Time of First Successful Submission: 2025-08-27 12:29:12

Specifying Filenames

Time of First Successful Submission: 2025-08-27 12:29:56

Binary and Hex Encoding

Time of First Successful Submission: 2025-08-27 12:31:53

More Hex

Time of First Successful Submission: 2025-08-27 12:32:30

Decoding Hex

Time of First Successful Submission: 2025-08-27 12:44:59

Decoding Practice

Time of First Successful Submission: 2025-08-27 12:46:08

Encoding Practice

Time of First Successful Submission: 2025-08-27 12:47:46

Hex-encoding ASCII

Time of First Successful Submission: 2025-08-27 12:50:04

Nested Encoding

Time of First Successful Submission: 2025-08-27 12:51:10

Hex-encoding UTF-8

Time of First Successful Submission: 2025-08-27 12:52:19

UTF Mixups

Time of First Successful Submission: 2025-08-27 12:56:25

Modifying Encoded Data

Time of First Successful Submission: 2025-08-27 13:01:02

Decoding Base64

Time of First Successful Submission: 2025-08-27 13:02:39

Encoding Base64

Time of First Successful Submission: 2025-08-27 13:05:33

Dealing with Obfuscation

Time of First Successful Submission: 2025-08-27 13:08:47

Dealing with Obfuscation 2

Time of First Successful Submission: 2025-08-27 13:12:01

Your First HTTP Request

Time of First Successful Submission: 2025-08-27 13:59:35

Reading Flask

Time of First Successful Submission: 2025-08-27 14:00:52

Commented Data

Time of First Successful Submission: 2025-08-27 14:25:25

HTTP Metadata

Time of First Successful Submission: 2025-08-27 14:26:56

HTTP (netcat)

Time of First Successful Submission: 2025-08-27 14:30:53

HTTP Paths (netcat)

Time of First Successful Submission: 2025-08-27 14:32:08

HTTP (curl)

Time of First Successful Submission: 2025-08-27 14:33:15

HTTP (python)

Time of First Successful Submission: 2025-08-27 14:37:36

HTTP Host Header (python)

Time of First Successful Submission: 2025-08-27 14:51:51

HTTP Host Header (curl)

Time of First Successful Submission: 2025-08-27 15:00:46

HTTP Host Header (netcat)

Time of First Successful Submission: 2025-08-27 15:17:34

URL Encoding (netcat)

Time of First Successful Submission: 2025-08-27 18:30:21

HTTP GET Parameters

Time of First Successful Submission: 2025-08-27 18:32:44

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2025-08-27 18:35:33

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2025-08-27 18:37:51

HTTP Forms

Time of First Successful Submission: 2025-08-27 18:38:59

HTTP Forms (curl)

Time of First Successful Submission: 2025-08-27 18:41:58

HTTP Forms (netcat)

Time of First Successful Submission: 2025-08-27 18:45:08

HTTP Forms (python)

Time of First Successful Submission: 2025-08-27 18:48:31

HTTP Forms Without Forms

Time of First Successful Submission: 2025-08-27 18:55:09

Multiple Form Fields (curl)

Time of First Successful Submission: 2025-08-27 19:01:57

Multiple Form Fields (netcat)

Time of First Successful Submission: 2025-08-27 19:05:43

HTTP Redirects (netcat)

Time of First Successful Submission: 2025-08-28 10:27:36

HTTP Redirects (curl)

Time of First Successful Submission: 2025-08-28 10:28:32

HTTP Redirects (python)

Time of First Successful Submission: 2025-08-28 10:32:08

HTTP Cookies (curl)

Time of First Successful Submission: 2025-08-28 10:36:55

HTTP Cookies (netcat)

Time of First Successful Submission: 2025-08-28 10:39:20

HTTP Cookies (python)

Time of First Successful Submission: 2025-08-28 10:41:36

Server State (python)

Time of First Successful Submission: 2025-08-28 11:05:57

Listening Web

Time of First Successful Submission: 2025-08-28 11:07:19

Speaking Redirects

Time of First Successful Submission: 2025-08-28 11:19:42

JavaScript Redirects

Time of First Successful Submission: 2025-08-28 11:27:34

Including JavaScript

Time of First Successful Submission: 2025-08-28 11:55:09

HTTP (javascript)

Time of First Successful Submission: 2025-08-28 12:11:48

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2025-08-28 12:15:17

HTTP Forms (javascript)

Time of First Successful Submission: 2025-08-28 12:47:12

cat

Time of First Successful Submission: 2025-08-29 17:27:12

more

Time of First Successful Submission: 2025-08-29 17:27:32

less

Time of First Successful Submission: 2025-08-29 17:28:18

tail

Time of First Successful Submission: 2025-08-29 17:29:04

head

Time of First Successful Submission: 2025-08-29 17:30:14

sort

Time of First Successful Submission: 2025-08-29 17:30:42

vim

Time of First Successful Submission: 2025-08-29 17:31:02

emacs

Time of First Successful Submission: 2025-08-29 17:31:19

nano

Time of First Successful Submission: 2025-08-29 17:33:15

rev

Time of First Successful Submission: 2025-08-29 17:33:58

od

Time of First Successful Submission: 2025-08-29 17:35:50

hd

Time of First Successful Submission: 2025-08-29 17:36:25

xxd

Time of First Successful Submission: 2025-08-29 17:36:51

base32

Time of First Successful Submission: 2025-08-29 17:37:20

base64

Time of First Successful Submission: 2025-08-29 17:37:58

split

Time of First Successful Submission: 2025-08-29 17:39:24

gzip

Time of First Successful Submission: 2025-08-29 17:41:05

bzip2

Time of First Successful Submission: 2025-08-29 17:41:31

zip

Time of First Successful Submission: 2025-08-29 17:42:30

tar

Time of First Successful Submission: 2025-08-29 17:43:10

ar

Time of First Successful Submission: 2025-08-29 17:45:41

cpio

Time of First Successful Submission: 2025-08-29 17:46:44

genisoimage

Time of First Successful Submission: 2025-08-31 17:31:28

env

Time of First Successful Submission: 2025-08-31 17:30:59

find

Time of First Successful Submission: 2025-08-31 17:29:54

make

Time of First Successful Submission: 2025-08-29 22:10:39

nice

Time of First Successful Submission: 2025-08-31 13:53:26

timeout

Time of First Successful Submission: 2025-08-31 13:56:56

stdbuf

Time of First Successful Submission: 2025-08-31 14:15:45

setarch

Time of First Successful Submission: 2025-08-31 14:16:51

watch

Time of First Successful Submission: 2025-08-31 14:19:19

socat

Time of First Successful Submission: 2025-08-31 14:20:00

whiptail

Time of First Successful Submission: 2025-08-31 16:44:07

awk

Time of First Successful Submission: 2025-08-31 16:46:10

sed

Time of First Successful Submission: 2025-08-31 16:46:56

ed

Time of First Successful Submission: 2025-08-31 16:47:45

chown

Time of First Successful Submission: 2025-08-31 16:48:28

chmod

Time of First Successful Submission: 2025-08-31 16:48:50

cp

Time of First Successful Submission: 2025-08-31 16:49:22

mv

Time of First Successful Submission: 2025-08-31 17:09:46

perl

Time of First Successful Submission: 2025-08-31 17:10:09

python

Time of First Successful Submission: 2025-08-31 17:10:34

ruby

Time of First Successful Submission: 2025-08-31 17:12:10

bash

Time of First Successful Submission: 2025-08-31 17:13:14

date

Time of First Successful Submission: 2025-08-31 17:14:30

dmesg

Time of First Successful Submission: 2025-08-31 17:15:41

wc

Time of First Successful Submission: 2025-08-31 17:16:33

gcc

Time of First Successful Submission: 2025-08-31 17:17:49

as

Time of First Successful Submission: 2025-08-31 17:18:32

wget

Time of First Successful Submission: 2025-08-31 17:21:02

ssh-keygen

Time of First Successful Submission: 2025-08-31 17:29:02

SQL Queries

Time of First Successful Submission: 2025-08-29 17:59:07

Filtering SQL

Time of First Successful Submission: 2025-08-29 18:02:19

Choosing Columns

Time of First Successful Submission: 2025-08-29 18:04:32

Exclusionary Filtering

Time of First Successful Submission: 2025-08-29 18:07:04

Filtering Strings

Time of First Successful Submission: 2025-08-29 18:08:47

Filtering on Expressions

Time of First Successful Submission: 2025-08-29 18:13:09

SELECTing Expressions

Time of First Successful Submission: 2025-08-29 18:19:20

Composite Conditions

Time of First Successful Submission: 2025-08-29 18:21:14

Reaching Your LIMITs

Time of First Successful Submission: 2025-08-29 18:22:44

Querying Metadata

Time of First Successful Submission: 2025-08-29 18:24:57


GCA CTF

10 / 104 18038 / 43529


Using the Terminal

Time of First Successful Submission: 2025-08-23 18:16:23

Using the VSCode Workspace

Time of First Successful Submission: 2025-08-23 18:19:02

Using the GUI Desktop

Time of First Successful Submission: 2025-08-24 07:35:59

Pasting into the Desktop

Time of First Successful Submission: 2025-08-24 07:36:53

Restarting Challenges

Time of First Successful Submission: 2025-08-24 07:38:14

Challenge Programs

Time of First Successful Submission: 2025-08-24 07:39:26

The Flag File

Time of First Successful Submission: 2025-08-24 07:40:12

Using Privileged Mode

Time of First Successful Submission: 2025-08-24 07:42:18

Persistent Home Directories - One

Time of First Successful Submission: 2025-08-24 07:43:24

Persistent Home Directories - Two

Time of First Successful Submission: 2025-08-24 07:44:04